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15
6. Electrical work
Fig. 6-4
TB7
TB3
(51)
L
3
L1
OC
TB7
(53)
OC
L
4
L5
M1 M2
S
M1 M2
S
S
M1 M2
S
TB3
M1 M2
S
M1 M2
S
M1 M2
TB3A
A-IC
(01)
A-IC
(02)
A-IC
(03)
A-IC
(04)
A-IC
MA-RC
MA-RC
MA-RC
MA-RC
WL-RC
WL-RC
WL-RC
WL-RC
(05)
A-IC
(06)
A-IC
(07)
A-IC
(08)
S1
S2
S3
TB3A
S1
S2
TB15
TB15
TB15
TB15
S3
TB3A
S1
S2
S3
TB3A
S1
S2
S3
TB3A
S1
S2
S3
TB3A
S1
S2
S3
TB3A
S1
S2
S3
TB3A
S1
S2
S3
TB3A
S1
S2
S3
TB3B
S1
S2
S3
TB3C
S1
S2
S3
TB3D
S1
S2
S3
TB3E
S1
S2
S3
TB3A
S1
S2
S3
TB3B
S1
S2
S3
TB3C
S1
S2
S3
M1
M2
S
TB5
M1
M2
S
TB5
L
(01)
(06)
2
A
A
A
1
2
A
B
1
2
A
B
1
2
A
B
1
2
A
B
m1
L6
<Example of Transmission Cable Wiring: Connecting with Branch box>
Power
Supply
Unit
System
controller
BC
BC
<Permissible Lengths>
• Maximum line length via outdoor units (M-NET cable):
L
1
+ L
2
+ L
3
+ L
4
+ L
5
{ 500 m [1640 ft] (1.25 mm
2
[AWG16] or more)
• Branch box/outdoor transmission line Maximum length (M-NET cable):
L
1
+ L
2
, L
3
+ L
4
, L
5
{ 200 m [656 ft] (1.25 mm
2
[AWG16] or more)
• Indoor/Branch box transmission line Maximum length (A-control cable):
L
6
{ 25 m [82 ft] (1.5 mm² [AWG14])
• Remote controller cable length:
m
1
{ 200 m [656 ft] (0.3 to 1.25 mm² [AWG22 to AWG16])
A
: Shielded wire
( ) : Address example
A-IC : M, S, P series Indoor unit
1. Group operation by single
remote controller
1. Plural indoor units cannot be operated by a single remote controller.
2. Different refrigerant systems cannot be connected together.
3. M-NET remote controller cannot be connected.
CO
BC
A B
C
NO
A-ICA-ICA-IC
MA-RC WL-RC
(3-branch type)
2. Group operation between different
refrigerant systems
COCO
BC
AB C
BC
AB C
NO
A-IC A-IC A-IC
MA-RC
WL-RC
(3-branch type) (3-branch type)
NO
OC
BC
ABCDE
M-NET
RC
A-IC
MA-RC MA-RC WL-RC WL-RC WL-RC
A-IC A-IC A-IC A-IC
3. Connection of M-NET Remote controller
(5-branch type)
<IncorrectSystems>
en
RG79F368H04_01en.indd 15 2022/02/09 16:17:20
016
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